KA5Q0765RT Fairchild, KA5Q0765RT Datasheet

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KA5Q0765RT

Manufacturer Part Number
KA5Q0765RT
Description
S P S
Manufacturer
Fairchild
Datasheet

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KA5Q0765RT
Manufacturer:
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Quantity:
20 000
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KA5Q0765RT
S P S
The SPS product family is specially designed for an off-line SMPS
with minimal external components. The SPS consist of high voltage
power SenseFET and current mode PWM IC.
Included PWM controller features integrated fixed oscillator, under
voltage lock out, leading edge blanking, optimized gate turn-on/turn-
off driver, thermal shut down protection, over voltage protection, and
temperature compensated precision current sources for loop
compensation and fault protection circuitry. Compared to discrete
MOSFET and controller or RCC switching converter solution, a SPS
can reduce total component count, design size, and weight and at
the same time increase efficiency, productivity, and system reliability.
It has a basic platform well suited for cost-effective design in Quasi-
Resonant Converter as C-TV power supply.
FEATURES
BLOCK DIAGRAM
1999 Fairchild Semiconductor Corporation
Quasi Resonant Converter Controller
Internal Burst mode Controller for Stand-by mode
Pulse by pulse current limiting
Over current Latch protection
Over voltage protection (Vsync: Min. 11V)
Internal thermal shutdown function
Under voltage lockout
Internal high voltage sense FET
Auto-restart mode

5
4
Vds
REF.
Ids
Sync.
REF.
+
TSD
150
o
+
C
Vz
Ifb
OVP
+
1.7R
PSR
REF.
OSC
R
Power-on
Reset
Burst mode
controller
S
R
Internal
LEB
Bias
+
Q
ORDERING INFORMATION
S
R
PWM
KA5Q0765RT
Q
_
Vfb offset
Vref
Device
Delay
500nS
+
1. Drain 2. GND 3. V
TO -22 0F -5L
UVLO
TO-220F-5L
+
Package
Roff
3
OCL
REF.
Ron
CC
1
Rsense
25 C to +85 C
4. FB 5. Sync
2
Topr ( C)
S P S
REV. B

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KA5Q0765RT Summary of contents

Page 1

... Auto-restart mode BLOCK DIAGRAM  Sync. REF. – Ifb Ids Vz + – Vds REF. TSD o 150 C 1999 Fairchild Semiconductor Corporation ORDERING INFORMATION KA5Q0765RT + Internal Burst mode – Bias PSR controller REF. OSC OVP LEB PWM 1.7R – Vfb offset S Power-on ...

Page 2

... KA5Q0765RT ABSOLUTE MAXIMUM RATINGS Characteristic (1) Drain-source (GND) voltage Drain-Gate voltage (R = Gate-source (GND) voltage (2) Drain current pulsed Single pulsed avalanche energy (4) Avalanche current Continuous drain current (T = Continuous drain current (T =100 C) C Supply voltage Analog input voltage range Total power dissipation ...

Page 3

... KA5Q0765RT ELECTRICAL CHARACTERISTICS (SFET part) (Ta=25 C unless otherwise specified) Characteristic Drain-source breakdown voltage Zero gate voltage drain current Static drain-source on resistance (note) Forward transconductance Input capacitance Output capacitance Reverse transfer capacitance Turn on delay time Rise time Turn off delay time Fall time ...

Page 4

... KA5Q0765RT ELECTRICAL CHARACTERISTICS (Control part) (Ta=25 C unless otherwise specified) Characteristic SENSE FET SECTION Drain to PKG Breakdown voltage Drain to Source Breakdown voltage Drain to Source Leakage current OSCILLATOR SECTION Initial Frequency Voltage Stability note 2 Temperature Stability Maximum Duty Cycle Minimum Duty Cycle UVLO SECTION ...

Page 5

... KA5Q0765RT ELECTRICAL CHARACTERISTICS (Continued) (Ta=25 C unless otherwise specified) Characteristic BURST MODE SECTION Burst mode Low Threshold Voltage Burst mode High Threshold Voltage Burst mode Enable Feedback voltage Burst mode Peak Current Limit PRIMARY SIDE REGULATION SECTION Primary Regulation Threshold Voltage Primary Regulation Thansconductance G ...

Page 6

... KA5Q0765RT TYPICAL PERFORMANCE CHARACTERISTICS Star t V oltage 1.10 1.05 1.00 0.95 0.90 - Temp Stan d -by Cur 1.40 1.20 1.00 0.80 0.60 - Temp 1.10 1.05 1.00 0.95 0.90 - Temp 1.10 1.05 1.00 0.95 0.90 100 125 150 -25 1.10 1.05 1.00 0.95 0.90 100 125 150 -25 1.10 1.05 1.00 0.95 0.90 100 125 150 - Stop V oltage 100 ...

Page 7

... KA5Q0765RT TYPICAL PERFORMANCE CHARACTERISTICS (Continued bac k Offse t V oltage 1.40 1.20 1.00 0.80 0.60 - Temp Ove r V oltage P r ote c tion 1.10 1.05 1.00 0.95 0.90 - Temp ShutDo wn De lay Curre nt 1.10 1.05 1.00 0.95 0.90 - Temp 1.20 1.10 1.00 0.90 0.80 100 125 150 -25 1.10 1.05 1.00 0.95 0.90 100 125 150 -25 B urs nab ltag e 1 ...

Page 8

... KA5Q0765RT TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Bur esh old V oltage 1.10 1.05 1.00 0.95 0.90 - Temp Bur igh old V oltage 1.10 1.05 1.00 0.95 0.90 - Temp imar y V olatge 1.02 1.01 1.00 0.99 0.98 - Temp 1.10 1.05 1.00 0.95 0.90 100 125 150 -25 1.10 1.05 1.00 0.95 0.90 -25 100 ...

Page 9

... KA5Q0765RT TYPICAL PERFORMANCE CHARACTERISTICS (Continued Cur imit 1.10 1.05 1.00 0.95 0.90 - Temp mal igh old V olatge 1.10 1.05 1.00 0.95 0.90 - Temp 1.10 1.05 1.00 0.95 0.90 -25 100 125 150 1.10 1.05 1.00 0.95 0.90 100 125 150 -25 Bur Cur imit 0 25 ...

Page 10

... KA5Q0765RT LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, ...

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